docs: update example links in README.md (microsoft#3452)

Replace the original link because the file no longer exists

Signed-off-by: jitokim <pigberger70@gmail.com>
Co-authored-by: Mark Cowlishaw <markcowl@microsoft.com>
Co-authored-by: Timothee Guerin <tiguerin@microsoft.com>

Author: 3 people

packages/tmlanguage-generator/README.md

@@ -4,5 +4,5 @@ This package provides a helper library for authoring TextMate grammars using Typ
 
 ## Usage Examples
 
-- [TypeSpec](https://github.com/microsoft/typespec/blob/main/packages/typespec-vscode/src/tmlanguage.ts)
+- [TypeSpec](https://github.com/microsoft/typespec/blob/main/packages/compiler/src/server/tmlanguage.ts)
 - [Bicep](https://github.com/Azure/bicep/blob/main/src/textmate/src/bicep.ts)